llvmir some opt

midend/visit/Visitor.java

@@ -0,0 +1,36 @@
+package midend.visit;
+
+import java.util.ArrayList;
+
+import frontend.ast.CompUnit;
+import frontend.ast.decl.Decl;
+import frontend.ast.func.FuncDef;
+import frontend.ast.func.MainFuncDef;
+import midend.symbol.SymbolManager;
+
+public class Visitor {
+    private CompUnit compUnit;
+
+    public Visitor(CompUnit compUnit) {
+        this.compUnit = compUnit;
+        SymbolManager.reset();
+        SymbolManager.nextTable();
+    }
+
+    public void visit() {
+        ArrayList<Decl> decls = this.compUnit.GetDecls();
+        ArrayList<FuncDef> funcDefs = this.compUnit.GetFuncDefs();
+        MainFuncDef mainFuncDef = this.compUnit.GetMainFuncDef();
+
+        for (Decl decl : decls) {
+            VisitorDecl.visitDecl(decl);
+        }
+
+        for (FuncDef funcDef : funcDefs) {
+            VisitorFuncDef.visitFuncDef(funcDef);
+        }
+
+        VisitorFuncDef.visitMainFuncDef(mainFuncDef);
+    }
+    //:TODO:符号表的变换，什么时候往前进一个符号表，这需要人工手工来操作
+}